Advertisements
Advertisements
Question
Fill in the blanks with suitable words:
An acid is a compound which when dissolved in water forms hydronium ions as the only ______ ions. A base is a compound which is soluble in water and contains ______ ions. A base reacts with an acid to form a ______ and water only. This type of reaction is known as ______.
Solution
An acid is a compound which when dissolved in water forms hydronium ions as the only positive ions. A base is a compound which is soluble in water and contains hydroxyl ions. A base reacts with an acid to form a salt and water only. This type of reaction is known as neutralization.
APPEARS IN
RELATED QUESTIONS
Give the preparation of the salt shown in the left column by matching with the methods given in the right column. Write a balanced equation for each preparation.
Salt | Method of preparation |
Zinc Sulphate | Precipitation |
Ferrous sulphide | Oxidation |
Barium Sulphate | Displacement |
Ferric sulphate | Neutralisation |
Sodium sulphate | Synthesis |
State how would you prepare copper (II) oxide from
Copper nitrate
Give equation to prepare the following as directed
NaHCO3 from Na2CO3
Some methods used for the laboratory preparation of salts are:
(a) Metal + acid
(b) Carbonate + acid
(c) Precipitation
(d) Direct combination
(e) Titration
Copy and complete the following table :
Salt | Method of Preparation |
Ammonium Sulphate | |
Calcium carbonate | |
Iron (III) chloride | |
Lead nitrate | |
Zinc sulphate |
Write the equation for the following reaction:
Magnesium sulphate solution is mixed with barium chloride solution.
Give the equation for the preparation of the following salt from the starting material given.
Lead chloride from lead carbonate (two equations)
Match the salts underlined in Column A with the most suitable method of preparation given in Column B.
Column A | Column B | ||
(a) | \[\ce{ZnCl2 \text{from} Zn}\] | 1. | Precipitation |
(b) | \[\ce{KNO3 \text{from} KOH}\]. | 2. | Direct combination |
(c) | \[\ce{CaCO3 \text{from} CaCl2}\]. | 3. | Displacement reaction |
4. | Neutralization |
You are provided with the following chemicals:
NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn.
Using the suitable chemicals from the given list only, state briefly how you would prepare sodium sulphate.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
D is a soluble salt of zinc.
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
An oxide which when dissolved in water form acid.